This project implements a secure emergency alert system using the MERN stack (MongoDB, Express, React, Node.js) integrated with blockchain technology for enhanced security and data integrity. Users can register and log in to the platform, add emergency contacts, and manage their profiles through an intuitive interface. In an emergency, users can click the SOS button, which triggers multiple simultaneous actions: sending an email alert to emergency contacts, recording and storing audio and video evidence, and sharing the user's real-time location. All critical activities and data are securely recorded on a blockchain ledger, ensuring an immutable and transparent record that prevents tampering and unauthorized access. This combination of MERN's fast, scalable web architecture with blockchain's decentralized security guarantees a reliable, trustworthy system that supports timely and verifiable emergency responses, protecting users when they need help the most.

Keywords: MERN stack, Blockchain technology, Emergency alert system SOS alert, Real-time location tracking, Audio and video recording, Email notification